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UNU DX White 1700 mAh Protective Battery Case For iPhone 4/4S DX-04-1700W

  • iPhone 4 / 4S
  • Lithium Polymer
  • Charging Time: 3-4 hours Life Cycles: 500 Cycles Standby Time: > 210 Hours Call Time: > 5 Hours (3G) / 10 Hours (2G) Browsing Time: > 5 Hours (3G) / 7 Hours (WiFi
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Extended battery life. Complete protection.

The versatile UNU DX Protective Battery Case is absolutely a great companion for any iPhone 4/4s users! It features a built-in 1700mAh rechargeable battery, providing your iPhone with extra-long battery life. Simply press the invisible charging switch on the back of case, and it starts to juice up.

It provides the most comprehensive protection to your device, and helps enhance the natural acoustics of the phone. It lets you easily access all features, and even sync and charge your device without removing the case. The ultra-slim, lightweight design perfectly fits onto the device without any added bulk and weight, while the sleek contemporary look adds a stylish touch to your device. 

All included: a glossy white battery case, a transparent screen protector, a micro USB charging cord, a micro fiber screen cleaning cloth  and an elegant uNu retail package & hard shell carrying box.

  • newegg Extended battery life Equipped with a 1700mAh rechargeable battery, the DX doubles the life of your iPhone 4/4s. The additional power yields six hours of talk-time, 30 hours of music playback, and a hefty 240 hours of standby time.
  • newegg Everything is handy The invisible charging switch lets you decide when an extra power boost is needed – just toggle it, and your iPhone will start charging. The LED battery level indicators enable you to easily check the current battery levels. And, a micro USB charging cord is also offered to quickly recharge the built-in battery (only 3-4 hours charging time). Better yet, you can even sync and charge your device with the case equipped by using the micro USB cord.
  • newegg Excellent protection The durable case protects the back, sides and corners of your iPhone 4/4S from scratch, bump, dirt or other damages. The transparent screen protector provides added protection for the screen. With an ergonomic hand-held fit and an anti-slip coating, you can securely hold it in your hand – no accidental drops!
  • newegg Sleek, ultra-slim design The ultra-slim, form-fitting case measures an impressive depth of just 17mm. It snuggly fits onto your iPhone, and highlights its beautiful shape. Its sleek design with vibrant color makes your phone look better than ever.

Learn more about the uNu DX-04-1700W


Battery Case


Compatible Phone Manufacturer
Compatible Phone Model
iPhone 4 / 4S


1700 mAh
Lithium Polymer
Charging Time: 3-4 hours

Life Cycles: 500 Cycles

Standby Time: > 210 Hours

Call Time: > 5 Hours (3G) / 10 Hours (2G)

Browsing Time: > 5 Hours (3G) / 7 Hours (WiFi)

Music Time: > 28 Hours

Video Time: > 7 Hours


Apple Certified 30-Pin Connector

Built-in Battery + Protective Case + Signal Problem Fix

Fully Support Charge and Sync with Case On

Smart Switch, Gain more control over charging to enhance Safety

Accurate LED power indicator, flashing when battery runs low

Perfectly design, offer a full protection only for iPhone 4


4.72" x 2.44" x 0.67"

Quick Info


  • Limited Warranty period (parts): 1 year
  • Limited Warranty period (labor): 1 year

Customer Reviews of the uNu DX-04-1700W

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